On 25 March 2013, Peru's government declared an environmental state of emergency in a remote Amazon jungle region it says has been affected by years of contamination at the country's most productive oil fields, which are currently operated by Pluspetrol. In declaring the emergency, Peru's Environment Ministry said the contamination included high levels of lead, barium and chromium as well as petroleum-related compounds. The 90-day emergency orders immediate action to reduce the risk of contamination to the local population. It published on 25 March 2013, for the first time, environmental quality standards setting acceptable limits for contaminants in soil.